The contrived shutdown crisis proved two things. It proved that Republicans are split down the middle between a lunatic, fundamentalist wing that prefers wreckage to governing and a pragmatic wing often allied with Wall Street. And it proved once and for all that being tough in the face of blackmail beats appeasement that only courts more rounds of blackmail.
Business elites applied escalating pressure on the Republicans not to let the United States default on its debt. In the end, 144 House Republicans voted against the measure, and 87 voted for it. That 144, though, exaggerates somewhat the true strength of the Tea Party faction. Some of that vote was a protest against the failure of the Democrats to give anything in return.